Error Codes: System Malfunctions - Daikin Altherma EKHBH Series Service Manual

ESIE06-03
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Error Codes: System Malfunctions

4.1 What Is in This Chapter?
Introduction In the first stage of the troubleshooting sequence, it is important to correctly interpret the error code on
the remote controller display. The error code helps you to find the cause of the problem.
Overview This chapter contains the following topics:
Topic
4.2–"U0" Insufficient Gas
4.3–"U2" Low-voltage Detection or Over-voltage Detection
4.4–"U4" Signal Transmission Error (between Hydro-box and Outdoor Units)
4.5–"U7" Malfunction of Transmission between Remote Controller and Control box
Part 3 – Troubleshooting
Error Codes: System Malfunctions
Part 3
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